Reformat the WebRTC code base

Running clang-format with chromium's style guide.

The goal is n-fold:
 * providing consistency and readability (that's what code guidelines are for)
 * preventing noise with presubmit checks and git cl format
 * building on the previous point: making it easier to automatically fix format issues
 * you name it

Please consider using git-hyper-blame to ignore this commit.

Bug: webrtc:9340
Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87
Reviewed-on: https://webrtc-review.googlesource.com/81185
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23660}
diff --git a/rtc_base/bytebuffer.cc b/rtc_base/bytebuffer.cc
index b2d7518..94fc6ac 100644
--- a/rtc_base/bytebuffer.cc
+++ b/rtc_base/bytebuffer.cc
@@ -34,7 +34,8 @@
   Construct(bytes, len);
 }
 
-ByteBufferReader::ByteBufferReader(const char* bytes, size_t len,
+ByteBufferReader::ByteBufferReader(const char* bytes,
+                                   size_t len,
                                    ByteOrder byte_order)
     : ByteBuffer(byte_order) {
   Construct(bytes, len);
@@ -63,13 +64,15 @@
 }
 
 bool ByteBufferReader::ReadUInt8(uint8_t* val) {
-  if (!val) return false;
+  if (!val)
+    return false;
 
   return ReadBytes(reinterpret_cast<char*>(val), 1);
 }
 
 bool ByteBufferReader::ReadUInt16(uint16_t* val) {
-  if (!val) return false;
+  if (!val)
+    return false;
 
   uint16_t v;
   if (!ReadBytes(reinterpret_cast<char*>(&v), 2)) {
@@ -81,7 +84,8 @@
 }
 
 bool ByteBufferReader::ReadUInt24(uint32_t* val) {
-  if (!val) return false;
+  if (!val)
+    return false;
 
   uint32_t v = 0;
   char* read_into = reinterpret_cast<char*>(&v);
@@ -98,7 +102,8 @@
 }
 
 bool ByteBufferReader::ReadUInt32(uint32_t* val) {
-  if (!val) return false;
+  if (!val)
+    return false;
 
   uint32_t v;
   if (!ReadBytes(reinterpret_cast<char*>(&v), 4)) {
@@ -110,7 +115,8 @@
 }
 
 bool ByteBufferReader::ReadUInt64(uint64_t* val) {
-  if (!val) return false;
+  if (!val)
+    return false;
 
   uint64_t v;
   if (!ReadBytes(reinterpret_cast<char*>(&v), 8)) {
@@ -145,7 +151,8 @@
 }
 
 bool ByteBufferReader::ReadString(std::string* val, size_t len) {
-  if (!val) return false;
+  if (!val)
+    return false;
 
   if (len > Length()) {
     return false;