refactor: use base::as_string_view() (#45745)

Use `base::as_string_view()` as a safer alternative to `reinterpret_cast`
in a couple of places.

Xref: https://chromium-review.googlesource.com/c/chromium/src/+/5472408

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: Charles Kerr <[email protected]>

shell/browser/api/electron_api_debugger.cc

@@ -8,6 +8,7 @@
 #include <string_view>
 #include <utility>
 
+#include "base/containers/span.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "content/public/browser/devtools_agent_host.h"
@@ -44,8 +45,7 @@ void Debugger::DispatchProtocolMessage(DevToolsAgentHost* agent_host,
   v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
   v8::HandleScope handle_scope(isolate);
 
-  std::string_view message_str(reinterpret_cast<const char*>(message.data()),
-                               message.size());
+  const std::string_view message_str = base::as_string_view(message);
   std::optional<base::Value> parsed_message = base::JSONReader::Read(
       message_str, base::JSON_REPLACE_INVALID_CHARACTERS);
   if (!parsed_message || !parsed_message->is_dict())

shell/browser/ui/inspectable_web_contents.cc

@@ -12,6 +12,7 @@
 #include <utility>
 
 #include "base/base64.h"
+#include "base/containers/span.h"
 #include "base/memory/raw_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/pattern.h"
@@ -903,8 +904,7 @@ void InspectableWebContents::DispatchProtocolMessage(
   if (!frontend_loaded_)
     return;
 
-  const std::string_view str_message{
-      reinterpret_cast<const char*>(message.data()), message.size()};
+  const std::string_view str_message = base::as_string_view(message);
   if (str_message.length() < kMaxMessageChunkSize) {
     CallClientFunction("DevToolsAPI", "dispatchMessage",
                        base::Value(std::string(str_message)));