Move extensions bindings code out of //chrome

chrome/renderer/extensions/set_icon_natives.cc

-// Copyright (c) 2012 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 "chrome/renderer/extensions/set_icon_natives.h"
-
-#include <limits>
-
-#include "base/memory/scoped_ptr.h"
-#include "chrome/common/render_messages.h"
-#include "extensions/renderer/request_sender.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "third_party/skia/include/core/SkColor.h"
-
-namespace {
-
-const char* kImageSizeKeys[] = { "19", "38" };
-const char kInvalidDimensions[] = "ImageData has invalid dimensions.";
-const char kInvalidData[] = "ImageData data length does not match dimensions.";
-const char kNoMemory[] = "Chrome was unable to initialize icon.";
-
-}  // namespace
-
-namespace extensions {
-
-SetIconNatives::SetIconNatives(Dispatcher* dispatcher,
-                               RequestSender* request_sender,
-                               ChromeV8Context* context)
-    : ChromeV8Extension(dispatcher, context),
-      request_sender_(request_sender) {
-  RouteFunction(
-      "SetIconCommon",
-      base::Bind(&SetIconNatives::SetIconCommon, base::Unretained(this)));
-}
-
-bool SetIconNatives::ConvertImageDataToBitmapValue(
-    const v8::Local<v8::Object> image_data,
-    base::Value** bitmap_value) {
-  v8::Isolate* isolate = context()->v8_context()->GetIsolate();
-  v8::Local<v8::Object> data =
-      image_data->Get(v8::String::NewFromUtf8(isolate, "data"))->ToObject();
-  int width =
-      image_data->Get(v8::String::NewFromUtf8(isolate, "width"))->Int32Value();
-  int height =
-      image_data->Get(v8::String::NewFromUtf8(isolate, "height"))->Int32Value();
-
-  if (width <= 0 || height <= 0) {
-    isolate->ThrowException(v8::Exception::Error(
-        v8::String::NewFromUtf8(isolate, kInvalidDimensions)));
-    return false;
-  }
-
-  // We need to be able to safely check |data_length| == 4 * width * height
-  // without overflowing below.
-  int max_width = (std::numeric_limits<int>::max() / 4) / height;
-  if (width > max_width) {
-    isolate->ThrowException(v8::Exception::Error(
-        v8::String::NewFromUtf8(isolate, kInvalidDimensions)));
-    return false;
-  }
-
-  int data_length =
-      data->Get(v8::String::NewFromUtf8(isolate, "length"))->Int32Value();
-  if (data_length != 4 * width * height) {
-    isolate->ThrowException(
-        v8::Exception::Error(v8::String::NewFromUtf8(isolate, kInvalidData)));
-    return false;
-  }
-
-  SkBitmap bitmap;
-  bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
-  if (!bitmap.allocPixels()) {
-    isolate->ThrowException(
-        v8::Exception::Error(v8::String::NewFromUtf8(isolate, kNoMemory)));
-    return false;
-  }
-  bitmap.eraseARGB(0, 0, 0, 0);
-
-  uint32_t* pixels = bitmap.getAddr32(0, 0);
-  for (int t = 0; t < width*height; t++) {
-    // |data| is RGBA, pixels is ARGB.
-    pixels[t] = SkPreMultiplyColor(
-        ((data->Get(v8::Integer::New(isolate, 4*t + 3))->Int32Value() & 0xFF)
-         << 24) |
-        ((data->Get(v8::Integer::New(isolate, 4*t + 0))->Int32Value() & 0xFF)
-         << 16) |
-        ((data->Get(v8::Integer::New(isolate, 4*t + 1))->Int32Value() & 0xFF)
-         << 8) |
-        ((data->Get(v8::Integer::New(isolate, 4*t + 2))->Int32Value() & 0xFF)
-         << 0));
-  }
-
-  // Construct the Value object.
-  IPC::Message bitmap_pickle;
-  IPC::WriteParam(&bitmap_pickle, bitmap);
-  *bitmap_value = base::BinaryValue::CreateWithCopiedBuffer(
-      static_cast<const char*>(bitmap_pickle.data()), bitmap_pickle.size());
-
-  return true;
-}
-
-bool SetIconNatives::ConvertImageDataSetToBitmapValueSet(
-    const v8::FunctionCallbackInfo<v8::Value>& args,
-    base::DictionaryValue* bitmap_set_value) {
-  v8::Local<v8::Object> extension_args = args[1]->ToObject();
-  v8::Local<v8::Object> details = extension_args
-      ->Get(v8::String::NewFromUtf8(args.GetIsolate(), "0"))->ToObject();
-  v8::Local<v8::Object> image_data_set =
-      details->Get(v8::String::NewFromUtf8(args.GetIsolate(), "imageData"))
-          ->ToObject();
-
-  DCHECK(bitmap_set_value);
-  for (size_t i = 0; i < arraysize(kImageSizeKeys); i++) {
-    if (!image_data_set->Has(
-            v8::String::NewFromUtf8(args.GetIsolate(), kImageSizeKeys[i])))
-      continue;
-    v8::Local<v8::Object> image_data = image_data_set
-        ->Get(v8::String::NewFromUtf8(args.GetIsolate(), kImageSizeKeys[i]))
-        ->ToObject();
-    base::Value* image_data_bitmap = NULL;
-    if (!ConvertImageDataToBitmapValue(image_data, &image_data_bitmap))
-      return false;
-    bitmap_set_value->Set(kImageSizeKeys[i], image_data_bitmap);
-  }
-  return true;
-}
-
-void SetIconNatives::SetIconCommon(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  scoped_ptr<base::DictionaryValue> bitmap_set_value(
-      new base::DictionaryValue());
-  if (!ConvertImageDataSetToBitmapValueSet(args, bitmap_set_value.get()))
-    return;
-
-  v8::Local<v8::Object> extension_args = args[1]->ToObject();
-  v8::Local<v8::Object> details = extension_args
-      ->Get(v8::String::NewFromUtf8(args.GetIsolate(), "0"))->ToObject();
-
-  base::DictionaryValue* dict = new base::DictionaryValue();
-  dict->Set("imageData", bitmap_set_value.release());
-
-  if (details->Has(v8::String::NewFromUtf8(args.GetIsolate(), "tabId"))) {
-    dict->SetInteger("tabId",
-                     details->Get(v8::String::NewFromUtf8(
-                         args.GetIsolate(), "tabId"))->Int32Value());
-  }
-
-  base::ListValue list_value;
-  list_value.Append(dict);
-
-  std::string name = *v8::String::Utf8Value(args[0]);
-  int request_id = args[2]->Int32Value();
-  bool has_callback = args[3]->BooleanValue();
-  bool for_io_thread = args[4]->BooleanValue();
-
-  request_sender_->StartRequest(context(),
-                                name,
-                                request_id,
-                                has_callback,
-                                for_io_thread,
-                                &list_value);
-}
-
-}  // namespace extensions