Remove failing DCHECKs in Blob code.

content/browser/fileapi/blob_url_request_job_unittest.cc

Index: content/browser/fileapi/blob_url_request_job_unittest.cc
diff --git a/content/browser/fileapi/blob_url_request_job_unittest.cc b/content/browser/fileapi/blob_url_request_job_unittest.cc
index 4a30e11aef40eb1afefc5765aeb883a4f4d43019..595775abddc2510489ded567fea1f284464fd625 100644
--- a/content/browser/fileapi/blob_url_request_job_unittest.cc
+++ b/content/browser/fileapi/blob_url_request_job_unittest.cc
@@ -98,6 +98,12 @@ class BlobURLRequestJobTest : public testing::Test {
     base::GetFileInfo(temp_file2_, &file_info2);
     temp_file_modification_time2_ = file_info2.last_modified;
 
+    ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir_.path(),
+                                               &temp_empty_file_));
+    base::File::Info empty_file_info;
+    base::GetFileInfo(temp_empty_file_, &empty_file_info);
+    temp_empty_file_modification_time_ = empty_file_info.last_modified;
+
     url_request_job_factory_.SetProtocolHandler("blob",
                                                 new MockProtocolHandler(this));
     url_request_context_.set_job_factory(&url_request_job_factory_);
@@ -131,6 +137,10 @@ class BlobURLRequestJobTest : public testing::Test {
     WriteFileSystemFile(kFilename2, kTestFileSystemFileData2,
                         arraysize(kTestFileSystemFileData2) - 1,
                         &temp_file_system_file_modification_time2_);
+    const char kEmptyFilename[] = "EmptyFileSystemFile.dat";
+    temp_empty_file_system_file_ = GetFileSystemURL(kEmptyFilename);
+    WriteFileSystemFile(kEmptyFilename, kTestFileSystemFileData1,
+                        0, &temp_empty_file_system_file_modification_time_);
   }
 
   GURL GetFileSystemURL(const std::string& filename) {
@@ -208,6 +218,11 @@ class BlobURLRequestJobTest : public testing::Test {
     blob_data_->AppendFile(temp_file2_, 5, 6, temp_file_modification_time2_);
     blob_data_->AppendFileSystemFile(temp_file_system_file2_, 6, 7,
                                      temp_file_system_file_modification_time2_);
+    blob_data_->AppendFile(temp_empty_file_, 0, 0,
+                           temp_empty_file_modification_time_);
+    blob_data_->AppendFileSystemFile(
+        temp_empty_file_system_file_, 0, 0,
+        temp_empty_file_system_file_modification_time_);
     *expected_result = std::string(kTestData1 + 1, 2);
     *expected_result += std::string(kTestFileData1 + 2, 3);
     *expected_result += std::string(kTestFileSystemFileData1 + 3, 4);
@@ -232,13 +247,17 @@ class BlobURLRequestJobTest : public testing::Test {
 
  protected:
   base::ScopedTempDir temp_dir_;
+  base::FilePath temp_empty_file_;
   base::FilePath temp_file1_;
   base::FilePath temp_file2_;
+  base::Time temp_empty_file_modification_time_;
   base::Time temp_file_modification_time1_;
   base::Time temp_file_modification_time2_;
   GURL file_system_root_url_;
+  GURL temp_empty_file_system_file_;
   GURL temp_file_system_file1_;
   GURL temp_file_system_file2_;
+  base::Time temp_empty_file_system_file_modification_time_;
   base::Time temp_file_system_file_modification_time1_;
   base::Time temp_file_system_file_modification_time2_;
 
@@ -414,4 +433,8 @@ TEST_F(BlobURLRequestJobTest, TestExtraHeaders) {
   EXPECT_EQ(kTestContentDisposition, content_disposition);
 }
 
+TEST_F(BlobURLRequestJobTest, TestGetEmptyDataRequest) {
+  TestSuccessNonrangeRequest("", 0);
+}
+
 }  // namespace content