Android Webview IPC-based sync compositing

content/common/android/sync_compositor_messages.h

Index: content/common/android/sync_compositor_messages.h
diff --git a/content/common/android/sync_compositor_messages.h b/content/common/android/sync_compositor_messages.h
new file mode 100644
index 0000000000000000000000000000000000000000..d48091a265ccb0c19480e40d792321998a743b5f
--- /dev/null
+++ b/content/common/android/sync_compositor_messages.h
@@ -0,0 +1,127 @@
+// Copyright 2015 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/output/begin_frame_args.h"
+#include "cc/output/compositor_frame.h"
+#include "cc/output/compositor_frame_ack.h"
+#include "content/common/content_export.h"
+#include "content/common/content_param_traits.h"
+#include "content/common/input/input_event_ack_state.h"
+#include "ipc/ipc_message_macros.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
+#include "ui/gfx/geometry/scroll_offset.h"
+
+#ifndef CONTENT_COMMON_ANDROID_SYNC_COMPOSITOR_MESSAGES_H_
+#define CONTENT_COMMON_ANDROID_SYNC_COMPOSITOR_MESSAGES_H_
+
+namespace content {
+
+struct SyncCompositorCommonBrowserParams {
+  SyncCompositorCommonBrowserParams();
+  ~SyncCompositorCommonBrowserParams();
+
+  size_t bytes_limit;
+  cc::CompositorFrameAck ack;
+  gfx::ScrollOffset root_scroll_offset;
+};
+
+struct SyncCompositorDemandDrawHwParams {
+  SyncCompositorDemandDrawHwParams();
+  SyncCompositorDemandDrawHwParams(
+      const gfx::Size& surface_size,
+      const gfx::Transform& transform,
+      const gfx::Rect& viewport,
+      const gfx::Rect& clip,
+      const gfx::Rect& viewport_rect_for_tile_priority,
+      const gfx::Transform& transform_for_tile_priority);
+  ~SyncCompositorDemandDrawHwParams();
+
+  gfx::Size surface_size;
+  gfx::Transform transform;
+  gfx::Rect viewport;
+  gfx::Rect clip;
+  gfx::Rect viewport_rect_for_tile_priority;
+  gfx::Transform transform_for_tile_priority;
+};
+
+struct SyncCompositorCommonRendererParams {
+  SyncCompositorCommonRendererParams();
+  ~SyncCompositorCommonRendererParams();
+
+  unsigned int version;
+  gfx::ScrollOffset total_scroll_offset;
+  gfx::ScrollOffset max_scroll_offset;
+  gfx::SizeF scrollable_size;
+  float page_scale_factor;
+  float min_page_scale_factor;
+  float max_page_scale_factor;
+  bool need_animate_scroll;
+  bool need_invalidate;
+  bool need_begin_frame;
+  bool did_activate_pending_tree;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_ANDROID_SYNC_COMPOSITOR_MESSAGES_H_
+
+// Multiply-included message file, hence no include guard.
+
+#undef IPC_MESSAGE_EXPORT
+#define IPC_MESSAGE_EXPORT CONTENT_EXPORT
+#define IPC_MESSAGE_START SyncCompositorMsgStart
+
+IPC_STRUCT_TRAITS_BEGIN(content::SyncCompositorCommonBrowserParams)
+  IPC_STRUCT_TRAITS_MEMBER(bytes_limit)
+  IPC_STRUCT_TRAITS_MEMBER(ack)
+  IPC_STRUCT_TRAITS_MEMBER(root_scroll_offset)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(content::SyncCompositorDemandDrawHwParams)
+  IPC_STRUCT_TRAITS_MEMBER(surface_size)
+  IPC_STRUCT_TRAITS_MEMBER(transform)
+  IPC_STRUCT_TRAITS_MEMBER(viewport)
+  IPC_STRUCT_TRAITS_MEMBER(clip)
+  IPC_STRUCT_TRAITS_MEMBER(viewport_rect_for_tile_priority)
+  IPC_STRUCT_TRAITS_MEMBER(transform_for_tile_priority)
+IPC_STRUCT_TRAITS_END()
+
+IPC_STRUCT_TRAITS_BEGIN(content::SyncCompositorCommonRendererParams)
+  IPC_STRUCT_TRAITS_MEMBER(version)
+  IPC_STRUCT_TRAITS_MEMBER(total_scroll_offset)
+  IPC_STRUCT_TRAITS_MEMBER(max_scroll_offset)
+  IPC_STRUCT_TRAITS_MEMBER(scrollable_size)
+  IPC_STRUCT_TRAITS_MEMBER(page_scale_factor)
+  IPC_STRUCT_TRAITS_MEMBER(min_page_scale_factor)
+  IPC_STRUCT_TRAITS_MEMBER(max_page_scale_factor)
+  IPC_STRUCT_TRAITS_MEMBER(need_animate_scroll)
+  IPC_STRUCT_TRAITS_MEMBER(need_invalidate)
+  IPC_STRUCT_TRAITS_MEMBER(need_begin_frame)
+  IPC_STRUCT_TRAITS_MEMBER(did_activate_pending_tree)
+IPC_STRUCT_TRAITS_END()
+
+IPC_SYNC_MESSAGE_ROUTED2_2(SyncCompositorMsg_HandleInputEvent,
+                           content::SyncCompositorCommonBrowserParams,
+                           IPC::WebInputEventPointer,
+                           content::SyncCompositorCommonRendererParams,
+                           content::InputEventAckState);
+
+IPC_SYNC_MESSAGE_ROUTED2_1(SyncCompositorMsg_BeginFrame,
+                           content::SyncCompositorCommonBrowserParams,
+                           cc::BeginFrameArgs,
+                           content::SyncCompositorCommonRendererParams);
+
+IPC_SYNC_MESSAGE_ROUTED2_1(SyncCompositorMsg_ComputeScroll,
+                           content::SyncCompositorCommonBrowserParams,
+                           base::TimeTicks,
+                           content::SyncCompositorCommonRendererParams);
+
+IPC_SYNC_MESSAGE_ROUTED2_2(SyncCompositorMsg_DemandDrawHw,
+                           content::SyncCompositorCommonBrowserParams,
+                           content::SyncCompositorDemandDrawHwParams,
+                           content::SyncCompositorCommonRendererParams,
+                           cc::CompositorFrame);
+
+IPC_MESSAGE_ROUTED1(SyncCompositorHostMsg_UpdateState,
+                    content::SyncCompositorCommonRendererParams);