Move blink<->cc bindings to cc/blink

These files provide the implementations of the public Blink API that
bind to the cc implementation. This moves them out of content/ into a
subdirectory of cc/ so that we can reuse these files in mojo which
can depend on cc/ and on blink but not on content/. To make sure we
don't introduce dependencies from cc/ on blink proper, cc/DEPS forbids
including cc/blink/ and cc/blink/DEPS allows using the blink headers.
cc_blink is built as a separate component to avoid linking anything from
blink into targets that don't care about the blink bindings (such as
the browser compositor).

R=darin@chromium.org

Review URL: https://codereview.chromium.org/470983004

Cr-Commit-Position: refs/heads/master@{#290464}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290464 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 46 insertions, 0 deletions

diff --git a/cc/blink/web_external_bitmap_impl.cc b/cc/blink/web_external_bitmap_impl.cc
new file mode 100644
index 0000000..a101079
--- /dev/null
+++ b/cc/blink/web_external_bitmap_impl.cc
@@ -0,0 +1,46 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cc/blink/web_external_bitmap_impl.h"
+
+#include "base/memory/shared_memory.h"
+
+namespace cc_blink {
+
+namespace {
+
+SharedMemoryAllocationFunction g_memory_allocator;
+
+}  // namespace
+
+void SetSharedMemoryAllocationFunction(
+    SharedMemoryAllocationFunction allocator) {
+  g_memory_allocator = allocator;
+}
+
+WebExternalBitmapImpl::WebExternalBitmapImpl() {
+}
+
+WebExternalBitmapImpl::~WebExternalBitmapImpl() {
+}
+
+void WebExternalBitmapImpl::setSize(blink::WebSize size) {
+  if (size != size_) {
+    size_t byte_size = size.width * size.height * 4;
+    shared_memory_ = g_memory_allocator(byte_size);
+    if (shared_memory_)
+      shared_memory_->Map(byte_size);
+    size_ = size;
+  }
+}
+
+blink::WebSize WebExternalBitmapImpl::size() {
+  return size_;
+}
+
+uint8* WebExternalBitmapImpl::pixels() {
+  return static_cast<uint8*>(shared_memory_->memory());
+}
+
+}  // namespace cc_blink