Move Partition Allocator into Chromium base.

third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp

Index: third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
index 0bc3ea1795027d138c0bccaff01e837445c00848..8d8fcc0827f72a30916299d58f26f620bafc35ed 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.cpp
@@ -31,6 +31,7 @@
 #include "platform/image-decoders/png/PNGImageDecoder.h"
 #include "platform/image-decoders/webp/WEBPImageDecoder.h"
 #include "wtf/PtrUtil.h"
+#include "wtf/SpinLock.h"
 #include <memory>
 
 namespace blink {
@@ -461,7 +462,7 @@ size_t ImagePlanes::rowBytes(int i) const {
 namespace {
 
 // The output device color space is global and shared across multiple threads.
-SpinLock gTargetColorSpaceLock;
+WTF::SpinLock gTargetColorSpaceLock;
 SkColorSpace* gTargetColorSpace = nullptr;
 
 }  // namespace
@@ -473,7 +474,7 @@ void ImageDecoder::setGlobalTargetColorProfile(const WebVector<char>& profile) {
 
   // Take a lock around initializing and accessing the global device color
   // profile.
-  SpinLock::Guard guard(gTargetColorSpaceLock);
+  WTF::SpinLock::Guard guard(gTargetColorSpaceLock);
 
   // Layout tests expect that only the first call will take effect.
   if (gTargetColorSpace)
@@ -490,7 +491,7 @@ void ImageDecoder::setGlobalTargetColorProfile(const WebVector<char>& profile) {
 sk_sp<SkColorSpace> ImageDecoder::globalTargetColorSpace() {
   // Take a lock around initializing and accessing the global device color
   // profile.
-  SpinLock::Guard guard(gTargetColorSpaceLock);
+  WTF::SpinLock::Guard guard(gTargetColorSpaceLock);
 
   // Initialize the output device profile to sRGB if it has not yet been
   // initialized.